Solid biofuels - Fuel specifications and classes - Part 6: Graded non-woody pellets (ISO 17225-6:2021)

Biogene Festbrennstoffe - Brennstoffspezifikationen und -klassen - Teil 6: Klassifizierung von nicht-holzartigen Pellets (ISO 17225-6:2021)

Dieses Dokument legt die qualitätsbezogenen Brennstoffklassen und  spezifikationen für klassifizierte nicht holzartige Pellets fest. Dieses Dokument umfasst nur nicht-holzartige Pellets, die aus folgenden Rohmaterialien hergestellt wurden (siehe ISO 17225 1:2021, Tabelle 1):
- 2 Halmgutartige Biomasse;
- 3 Biomasse von Früchten;
- 4 Aquatische Biomasse;
- 5 Definierte und undefinierte Mischungen von Biomasse.
ANMERKUNG 1 Halmgutartige Biomasse stammt von Pflanzen mit einem nicht verholztem Stängel, die am Ende der Wachstumssaison absterben. Dazu gehören Getreide  oder Saatgutpflanzen aus der Lebensmittel herstellenden oder verarbeitenden Industrie und deren Nebenprodukte, wie z. B. Getreide.
ANMERKUNG 2 Definierte und undefinierte Mischungen umfassen definierte und undefinierte Mischungen aus den auf der Herkunft beruhenden Hauptgruppen biogener Festbrennstoffe holzartige Biomasse, halmgutartige Biomasse, Biomasse von Früchten und aquatische Biomasse.
Definierte Mischungen sind absichtlich gemischte biogene Brennstoffe, während undefinierte Mischungen zufällig gemischte biogene Brennstoffe sind. Die Herkunft der definierten und undefinierten Mischungen ist unter Anwendung von ISO 17225 1:2021, Tabelle 1, zu beschreiben.
Wenn eine definierte oder undefinierte Mischung von biogenen Festbrennstoffen chemisch behandeltes Material enthält, muss dies angegeben werden.
ANMERKUNG 3 Thermisch behandelte Biomassepellets (z. B. torrefizierte Pellets) fallen nicht in den Anwendungsbereich dieses Dokuments.

Biocombustibles solides - Classes et spécifications des combustibles - Partie 6: Classes de granulés d'origine agricole (ISO 17225-6:2021)

Trdna biogoriva - Specifikacije goriv in razredi - 6. del: Razvrščeni nelesni peleti (ISO 17225-6:2021)

General Information

Status
Published
Public Enquiry End Date
01-Nov-2020
Publication Date
07-Sep-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Aug-2021
Due Date
07-Oct-2021
Completion Date
08-Sep-2021

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SLOVENSKI STANDARD
SIST EN ISO 17225-6:2021
01-oktober-2021
Nadomešča:
SIST EN ISO 17225-6:2014

Trdna biogoriva - Specifikacije goriv in razredi - 6. del: Razvrščeni nelesni peleti

(ISO 17225-6:2021)

Solid biofuels - Fuel specifications and classes - Part 6: Graded non-woody pellets (ISO

17225-6:2021)

Biogene Festbrennstoffe - Brennstoffspezifikationen und -klassen - Teil 6: Klassifizierung

von nicht-holzartigen Pellets (ISO 17225-6:2021)

Biocombustibles solides - Classes et spécifications des combustibles - Partie 6: Classes

de granulés d'origine agricole (ISO 17225-6:2021)
Ta slovenski standard je istoveten z: EN ISO 17225-6:2021
ICS:
75.160.40 Biogoriva Biofuels
SIST EN ISO 17225-6:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 17225-6:2021
---------------------- Page: 2 ----------------------
SIST EN ISO 17225-6:2021
EN ISO 17225-6
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 27.190; 75.160.40 Supersedes EN ISO 17225-6:2014
English Version
Solid biofuels - Fuel specifications and classes - Part 6:
Graded non-woody pellets (ISO 17225-6:2021)

Biocombustibles solides - Classes et spécifications des Biogene Festbrennstoffe - Brennstoffspezifikationen

combustibles - Partie 6: Classes de granulés d'origine und -klassen - Teil 6: Klassifizierung von nicht-

agricole (ISO 17225-6:2021) holzartigen Pellets (ISO 17225-6:2021)
This European Standard was approved by CEN on 12 June 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17225-6:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 17225-6:2021
EN ISO 17225-6:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 17225-6:2021
EN ISO 17225-6:2021 (E)
European foreword

This document (EN ISO 17225-6:2021) has been prepared by Technical Committee ISO/TC 238 "Solid

biofuels" in collaboration with Technical Committee CEN/TC 335 “Solid biofuels” the secretariat of

which is held by SIS.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by January 2022, and conflicting national standards shall

be withdrawn at the latest by January 2022.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 17225-6:2014.

Any feedback and questions on this document should be directed to the users’ national standards

body/national committee. A complete listing of these bodies can be found on the CEN websites.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 17225-6:2021 has been approved by CEN as EN ISO 17225-6:2021 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 17225-6:2021
---------------------- Page: 6 ----------------------
SIST EN ISO 17225-6:2021
INTERNATIONAL ISO
STANDARD 17225-6
Second edition
2021-07
Solid biofuels — Fuel specifications
and classes —
Part 6:
Graded non-woody pellets
Biocombustibles solides — Classes et spécifications des
combustibles —
Partie 6: Classes de granulés d'origine agricole
Reference number
ISO 17225-6:2021(E)
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 17225-6:2021
ISO 17225-6:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 17225-6:2021
ISO 17225-6:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Symbols and abbreviated terms ........................................................................................................................................................... 3

5 Specification of graded non-woody pellets ............................................................................................................................... 3

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2021 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 17225-6:2021
ISO 17225-6:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 238, Solid biofuels.

This second edition cancels and replaces the first edition (ISO 17225-6:2014), which has been technically

revised. The main changes compared to the previous edition are as follows:
— Arsenic and chlorine values changed in Class B
— Ash melting behaviour added as an informative property

— Specification of pellets produced from cereal straw, miscanthus and reed canary grass has been

included in Table 1.
A list of all parts in the ISO 17225 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 17225-6:2021
ISO 17225-6:2021(E)
Introduction

The objective of the ISO 17225 series is to provide unambiguous and clear classification principles

for solid biofuels and to serve as a tool to enable efficient trading of biofuels and to enable good

understanding between seller and buyer as well as a tool for communication with equipment

manufacturers. It will also facilitate authority permission procedures and reporting.

This document supports the use of graded non-woody pellets in specially designed appliances for

residential, small commercial and public buildings as well as industrial energy generation applications,

which require classified pellet quality.

The residential, small commercial and public building appliances require higher quality fuel for the

following reasons:

— Small-scale equipment does not usually have advanced controls and flue gas cleaning

— Appliances are not generally managed by professional heating engineers
— Appliances are often located in residential and populated districts

Non-woody pellets have high ash, chlorine (Cl), nitrogen (N) and sulfur (S) content and major element

contents, so non-woody pellets are recommended to be used in appliances, which are specially designed

or adjusted for this kind of pellet.

In general, non-woody biomass materials have higher content of ash forming elements and produces

ashes with lower melting temperature compared to most woody biomass. Be aware that herbaceous

or fruit biomass may influence the fuel ash composition differently depending on growth and soil

conditions. This may result in fouling, slagging and corrosion inside boilers. These problems are

especially related to materials that have high content of potassium (K) and silicate (Si) and low content

of calcium (Ca). The content of chlorine (Cl), phosphate (P) and potassium (K) in the material may form

chlorides and phosphorous and other chemical compounds resulting in high hydrochloric emissions

and chemically active ash causing corrosion. Special attention should be paid to the risk of corrosion in

small and medium scale boilers and flue gas systems. Blending with woody biomass can improve the

combustion characteristics.
NOTE For individual contracts ISO 17225-1 can be used.

Although this document may be obtained separately, it requires a general understanding of the

standards based on and supporting ISO 17225-1. It is recommended to obtain and use ISO 17225-1 in

conjunction with this docum
...

SLOVENSKI STANDARD
oSIST prEN ISO 17225-6:2020
01-oktober-2020

Trdna biogoriva - Specifikacije goriv in razredi - 6. del: Razvrščeni nelesni peleti

(ISO/DIS 17225-6:2020)

Solid biofuels - Fuel specifications and classes - Part 6: Graded non-woody pellets

(ISO/DIS 17225-6:2020)

Biogene Festbrennstoffe - Brennstoffspezifikationen und -klassen - Teil 6: Klassifizierung

von nicht-holzartigen Pellets (ISO/DIS 17225-6:2020)

Biocombustibles solides - Classes et spécifications des combustibles - Partie 6: Classes

de granulés d'origine agricole (ISO/DIS 17225-6:2020)
Ta slovenski standard je istoveten z: prEN ISO 17225-6
ICS:
75.160.40 Biogoriva Biofuels
oSIST prEN ISO 17225-6:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 17225-6:2020
---------------------- Page: 2 ----------------------
oSIST prEN ISO 17225-6:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 17225-6
ISO/TC 238 Secretariat: SIS
Voting begins on: Voting terminates on:
2020-07-14 2020-10-06
Solid biofuels — Fuel specifications and classes —
Part 6:
Graded non-woody pellets
Biocombustibles solides — Classes et spécifications des combustibles —
Partie 6: Classes de granulés d'origine agricole
ICS: 27.190; 75.160.40
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 17225-6:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 17225-6:2020
ISO/DIS 17225-6:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 17225-6:2020
ISO/DIS 17225-6:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Symbols and abbreviated terms ........................................................................................................................................................... 3

5 Specification of graded non-woody pellets ............................................................................................................................... 3

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 17225-6:2020
ISO/DIS 17225-6:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 238, Solid biofuels.

This second edition cancels and replaces the first edition (ISO 17225-6:2014), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— Arsenic values changed in Class B
A list of all parts in the ISO 17225 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 17225-6:2020
ISO/DIS 17225-6:2020(E)
Introduction

The objective of the ISO 17225 series is to provide unambiguous and clear classification principles

for solid biofuels and to serve as a tool to enable efficient trading of biofuels and to enable good

understanding between seller and buyer as well as a tool for communication with equipment

manufacturers. It will also facilitate authority permission procedures and reporting.

This part of ISO 17225 supports the use of graded non-woody pellets for residential, small commercial

and public buildings as well as industrial energy generation applications, which require classified pellet

quality.

The residential, small commercial and public building applications require higher quality fuel for the

following reasons:

• Small-scale equipment does not usually have advanced controls and flue gas cleaning

• Appliances are not generally managed by professional heating engineers
• Appliances are often located in residential and populated districts

Non-woody pellets have high ash, chlorine (Cl), nitrogen (N) and sulfur (S) content and major element

contents, so non-woody pellets are recommended to be used in appliances, which are specially designed

or adjusted for this kind of pellet.

In general non-woody biomass materials have higher content of ash forming elements and produces

ashes with lower melting temperature compared to most woody biomass. Be aware that herbaceous

or fruit biomass may influence the fuel ash composition differently depending on growth and soil

conditions. This may result in fouling, slagging and corrosion inside boilers. These problems are

especially related to materials that have high content of potassium (K) and silicate (Si) and low content

of calcium (Ca). The content of chlorine (Cl), phosphate (P) and potassium (K) in the material may form

chlorides and phosphates and other chemical compounds resulting in high hydrochloric emissions and

chemically active ash causing corrosion. Special attention should be paid to the risk of corrosion in

small and medium scale boilers and flue gas systems. Blending with woody biomass can improve the

combustion charasteristics.

NOTE 1 Pellets produced according to this part of ISO 17225 may be used in pellet stoves, which are tested

[1] [2]

according to European Standard EN 14785 and in pellet burners tested according to EN 15270 and pellet

[3]
boilers or integrated-pellet burner systems tested according to EN 303–5 .
NOTE 2 For individual contracts ISO 17225-1 can be used.

Although these product standards may be obtained separately, they require a general understanding of

the standards based on and supporting ISO 17225-1. It is recommended to obtain and use ISO 17225-1

in conjunction with these standards.
© ISO 2020 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 17225-6:2020
---------------------- Page: 8 ----------------------
oSIST prEN ISO 17225-6:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 17225-6:2020(E)
Solid biofuels — Fuel specifications and classes —
Part 6:
Graded non-woody pellets
1 Scope

This part of ISO 17225 determines the fuel quality classes and specifications of graded non-woody

pellets. This part of ISO 17225 covers only non-woody pellets produced from the following raw material

(see ISO 17225-1, Table 1):
— 2 Herbaceous biomass

NOTE 1 Herbaceous biomass is from plants that have a non-woody stem and which die back at the end of the

growing season. It includes grains or seeds crops from food production or processing industry and their by-

products such as cereals.
— 3 Fruit biomass
— 4 Aquatic biomass
— 5 Biomass blends and mixtures

NOTE 2 Group 5 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel

groups woody, herbaceous biomass, fruit biomass and aquatic biomass.

Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The

origin of the blend and mixture is to be described using ISO 17225-1, Table 1.

If solid biofuel blend or mixture contains chemically treated material it shall be stated.

NOTE 3 Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this part of

ISO 17225. Torrefaction is a mild pre-treatment of biomass at a temperature between 200 °C to 300 °C.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 14780, Solid biofuels — Sample preparation
ISO 16559, Solid biofuels — Terminology, definitions and descriptions

ISO 16948, Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen

ISO 16968, Solid biofuels — Determination of minor elements

ISO 16993, Solid biofuels — Conversion of analytical results from one basis to another

ISO 16994, Solid biofuels — Determination of total content of sulfur and chlorine

ISO 17225-1, Solid biofuels —Solid biofuels – Part 1 – General requirements

ISO 17827-1, Solid biofuels — Determination of particle size distribution for uncompressed fuels — Part 1:

Oscillating screen method using sieves with apertures of 3,15 mm and above
© ISO 2020 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 17225-6:2020
ISO/DIS 17225-6:2020(E)
ISO 17828, Solid biofuels — Determination of bulk density
ISO 17829, Solid Biofuels — Determination of length and diameter of pellets
ISO 17830, Solid biofuels — Particle size distribution of disintegrated pellets

ISO 17831-1, Solid biofuels — Determination of mechanical durability of pellets and briquettes —

Part 1: Pellets
ISO 18122, Solid biofuels — Determination of ash content
ISO 18125, Solid biofuels — Determination of calorific value

ISO 18134-1, Solid biofuels — Determination of moisture content — Oven dry method — Part 1: Total

moisture — Reference method
ISO 18134-2, Solid biofuels — Determination of mois
...

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